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一、棉花对气候条件的要求棉花原产于热带,是喜温好光的作物,它要求温暖湿润的气候条件。播种要求日平均气温稳定上升到15℃。7月平均温度要求25℃以上,有利于开花结铃。10月平均温度要求17℃以上,不然铃重、纤维品质都会受到影响。从播种到吐絮,一般中熟品种需要≥15℃的积温3400—3600℃。全生育期总需水量一般年为450—500mm,干旱年约需750mm左右。全生育期需日照时数为950小时。而我省气候条件相当优越,完全可以满足其生长发育的要求:年平均气温16.3—19.7℃,4月平均温度16.2—19.8℃,7月平均温度26.9—29.6℃,10月平均温度17.2—21.4℃,全生育期≥15℃积温多年平均值(指20年平均)4381—5610℃。看来全省各地热量资源是绰绰有余。多年平均降水量1350—1930mm,
First, the requirements of cotton on the climatic conditions Cotton native to the tropics, is a good warm winter crop, which requires warm and humid climatic conditions. Seeding requirements on average daily average temperature rose to 15 ℃. July average temperature above 25 ℃, is conducive to flowering bell. October average temperature requirements of 17 ℃ above, or bell weight, fiber quality will be affected. From sowing to bolting floc, general maturity varieties need ≥15 ℃ accumulated temperature 3400-3600 ℃. The total water demand during the whole growth period is generally 450-500mm, about 750mm in drought years. The whole growth period of sunshine hours is 950 hours. The climate conditions in our province is quite superior, fully meet the requirements of its growth and development: the annual average temperature of 16.3-19.7 ℃, the average temperature in April 16.2-19.8 ℃, the average temperature in July 26.9-9.29 ℃, the average temperature in October 17.2-21.4 ℃, the whole growth period ≥15 ℃ accumulated temperature for many years (mean 20 years) 4381-5610 ℃. It seems that the province’s thermal resources are more than enough. Years of average precipitation 1350-1930mm,